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Security checkJune 30, 2025

PrismJS DOM Clobbering vulnerability

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Medium severitynpmprismjs

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Description

Prism (aka PrismJS) through 1.29.0 allows DOM Clobbering (with resultant XSS for untrusted input that contains HTML but does not directly contain JavaScript), because document.currentScript lookup can be shadowed by attacker-injected HTML elements.

Recommendation

Update the prismjs package to the latest compatible version. Followings are version details:

  • Affected version(s): < 1.30.0
  • Patched version(s): 1.30.0

References

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